/Engine/Source/Runtime/Core/Public/Templates/SharedPointer.h
Provides a weak reference to this object. Note that is only valid to call this after a shared reference (or shared pointer) to the object has already been created. Also note that it is illegal to call this in the object's destructor.
Returns this object as a shared pointer
[TWeakPtr](API\Runtime\Core\Templates\TWeakPtr)< ObjectType, Mode > AsWeak()